Building exterior



FIG. 1 is a front perspective view of a building exterior showing ournew design.

FIG. 2 is a front view thereof.

FIG. 3 is a left side view thereof.

FIG. 4 is a right side view thereof; and,

FIG. 5 is a top view thereof.

The broken lines in the figures show portions of the building exteriorthat form no part of the claimed design.

The ornamental design for a building exterior, as shown and described.